Overnight 2026-08-16 pick-5

Grok ballot: unique-sum, three-in-line (n=71), Chowla cosine, Sidon second term, Brocard. Hofstadter rejected (already settled, arXiv:2608.07910).

Launched: unique-sum, three-in-line, brocard, schur, covering.

Folders now: problems/{covering,brocard,unique-sum,three-in-line,schur}.

Afternoon 2026-08-16 (Grok 4.6)

P42 vdw-w27 and P21 c7-shannon (fifth-power 367). Hofstadter still skipped.